If negative energy satisfies the theories then I think the next interesting question is what is the cause of the observed absence of negative energy in reality? Cosmologist have been trying to address a question like this but I understood it to be in respect of there is lots of matter but not lots of matter with opposite charge/spin/colour etc (i.e. the observed but not naturally abundant type of antimatter). Does this established cosmological question include or exclude the predominants of matter over negative matter (which fits the math but [apparently] has not been observed "in reality")?

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